What are the 3 major functional units of a gene and what are their functions ?

QUESTION POSTED AT 14/02/2020 - 01:51 PM

Related questions

Describe one possible effect of a gene mutation in a body cell on an organism and one possible effect on the offspring of that organism

A gene mutation may result in an oncogene. So during that cell's replication the gate keeper genes will no longer be able to suppress it. This results in a mutated daughter cell.  If there is a subsequent mutation an a daughter cell, a tumor will be produced. 

Gene mutation can also cause mosaicism and result in different phenotypes 

ANSWERED AT 22/02/2020 - 06:23 PM


QUESTION POSTED AT 22/02/2020 - 06:23 PM

Why do mapping experiments become less accurate when the distances between genes become large?

Mapping experiments become less accurate when the distances between genes become large because multiple crossovers are more common.
Thus it can be quite difficult to experiment with mapping because many crossovers may occur which may interfere with the accuracy of the experiments. 

ANSWERED AT 22/02/2020 - 05:40 PM


QUESTION POSTED AT 22/02/2020 - 05:40 PM

What are the differentwo versions of a gene for the same trait called?

Alleles is the answer

ANSWERED AT 22/02/2020 - 04:47 PM


QUESTION POSTED AT 22/02/2020 - 04:47 PM

Please Help_Biology The term gene expression can be best explained by which of the following? A. An increase in the amount of RNA polymerase B. The production of proteins based on the genetic information in DNA C. The production of nucleic acids D. The suppression of DNA replication

Answer:

B. The production of proteins based on the genetic information in DNA

Explanation:

    Gene expression is the set of processes by which information contained in genes is converted into molecules that determine cell properties, that is, the transfer of genetic information from DNA to protein.

    The expression of a gene encompasses a series of steps ranging from the synthesis of an RNA molecule, from a base sequence in the DNA molecule (gene) to the synthesis of a protein from that RNA molecule (messenger RNA).

ANSWERED AT 22/02/2020 - 04:29 PM


QUESTION POSTED AT 22/02/2020 - 04:29 PM

Which of the following units is best when measuring the mass of an object? meters cubic meters kilograms kilograms per cubic meter

Answer: Kilograms (kg)

Mass can be defined as the property of a physical body. It is a measure of resistance of the body to the acceleration when a net force is applied on a body. The mass of the physical body determines the strength of the gravitational force by which it is attracted by other body or earth. The unit by which a mass can be measured is called as kilograms (kg).

ANSWERED AT 22/02/2020 - 04:20 PM


QUESTION POSTED AT 22/02/2020 - 04:20 PM

Structural and functional units of the nervous system.A. AxonB. Myelin SheathC. Dendrites D. Glial cellsE. Neuron

E. Neuron or C I believe
Hope this helps.

ANSWERED AT 22/02/2020 - 03:49 PM


QUESTION POSTED AT 22/02/2020 - 03:49 PM

Write a 250 word research report on a pathogenic bacterium that is not discussed in this unit (you may choose one from the gram-positive cocci table). Include the history, the scientific name of the bacterium, vectors, symptoms, etc.

The one I chose is very interesting I think you will enjoy it.

Staphylococcus aureus (MRSA)

First diagnosed in 1884 MRSA is a Flesh Eating Disease that can easily spread through contact with an infected host. It's scientific name is Methicillin-resistant Staphylococcus aureus. MRSA's symptoms include pimples, boils, Red lumps, etc. These areas often contain pus, lots and lots of pus. Some antibiotics can treat this, but it is rapidly adapting to these are growing resistant to antibiotics that previously worked. This is very lethal.

Hope this helped. Have a great night! :)

ANSWERED AT 22/02/2020 - 03:36 PM


QUESTION POSTED AT 22/02/2020 - 03:36 PM

Describe the function of the male reproductive system.

To get a female pregnant to reproduce and make children 

ANSWERED AT 22/02/2020 - 03:28 PM


QUESTION POSTED AT 22/02/2020 - 03:28 PM

2 examples of gene flow

Bees carry pollen from one population of flowers to another population

Red bugs migrated over to somewhere else because it has flooded and mate with orange bugs 

ANSWERED AT 22/02/2020 - 03:18 PM


QUESTION POSTED AT 22/02/2020 - 03:18 PM

Which term describes the phenomenon that occurs when the expression of one gene pair masks the expression of another gene pair?

It's called complete dominance of the dominant gene when it totally masks expression by the recessive gene.

ANSWERED AT 22/02/2020 - 01:27 PM


QUESTION POSTED AT 22/02/2020 - 01:27 PM

What process actually increases the number of genes in an organism's genome?

MUTATIONS  lead to duplications actually increase the number of genes in a genome.

ANSWERED AT 22/02/2020 - 01:21 PM


QUESTION POSTED AT 22/02/2020 - 01:21 PM

Which of the following is true of fuel used by the brain? brain cells are able to use several fuels other than glucose. the brain is always the last in line for new fuel. the flow of blood to the brain can be suspended for at least 5 minutes. interruption of blood flow for even a few seconds impairs brain function. the body can modulate blood flow to meet the energy needs of the brain.

The answer is "Interruption of blood flow for even a few seconds impairs brain function. "
When blood fails to circulate in your brain, there is a tendency that you will be suffering from Brain Ischemia. Brain Ischemia can affect your sight, speaking and body movements.

ANSWERED AT 22/02/2020 - 01:10 PM


QUESTION POSTED AT 22/02/2020 - 01:10 PM

What is a gene pool?

The gene pool is the set of all genes, or genetic information, in any population, usually of a particular species.

ANSWERED AT 22/02/2020 - 12:49 PM


QUESTION POSTED AT 22/02/2020 - 12:49 PM

How are the order of codons determined? The DNA sequence determines thbe order. The RNA sequence determines the order. The number of genes determines the order.

the answer is A      i just did it                    

ANSWERED AT 22/02/2020 - 03:01 AM


QUESTION POSTED AT 22/02/2020 - 03:01 AM

When neither gene in a genotype pair is dominant and neither gene is recessive, the genes are said to be

 when nither gene in a genotype pair is dominat nor recessive it is called co-dominance

ANSWERED AT 22/02/2020 - 12:16 AM


QUESTION POSTED AT 22/02/2020 - 12:16 AM

What is a secondary function of the lymphatic system? Maintaining fluid balance Fighting infection Cleaning the blood Making lymph Is it A or B? Or something else?

I believe the correcrtanswer is B. Fighting infection.

Explanation:

The lymphatic system has special tissues called the lymph nodes that produce and contain white blood cells to help the body fight infections. Its primary function is to maintain fluid balance and the other function is absorbing fatty acids and transporting fats and chyle to the rest of the body.

Further Explanation:

During normal functioning of the body, fluids move from blood into tissues as they transport oxygen and nutrients to the tissues and carbon dioxide and other wastes away from the tissues. The fluid that is excess in the tissues needs to be removed from the tissues involved and that is where the lymphatic system functions primarily. The secondary function is fighting infections by producing white blood cells and pooling them in places affected by infections. The white blood cells produced by the lymph nodes of the lymphatic system are classified depending on the arrangement of their nucleuses, cellular granules, color of granules and their shape and size.

The cells include lymphocytes that fight viral infections such as influenza and HIV, neutrophils that fight bacterial infections that cause conditions such as typhoid and step throats, eosinophils that fight parasites that cause diseases such as malaria and trypanosomiasis, basophils that help the body respond to allergies such as in hay fever or allergies to fur from pets, monocytes that also fight bacteria and plasma cells that are specialized types of lymphocytes called B-lymphocytes that fight cancers and viruses. The cells are suspended in lymph and they are transported to any site that is needed to fight infections or disease causing antigens. You can observe the action of lymph nodes when a person gets a cut in his leg. Due to the cut, the lymph nodes in the groin region will start producing many white blood cells to fight the infection on the foot making the corners of the groin to swell in relation to the foot that is affected. Lymph nodes can be found in areas such as the neck, under the chin on both the left and right side, in the armpit region and the groin.

Level: High School

Subject: Biology

Topic: The Immune system

ANSWERED AT 22/02/2020 - 12:09 AM


QUESTION POSTED AT 22/02/2020 - 12:09 AM

What makes up about 50% of all land areas in the United States ?

Plains
plains
plains
plains


ANSWERED AT 21/02/2020 - 11:08 PM


QUESTION POSTED AT 21/02/2020 - 11:08 PM

The majority of scientists predict that the rise in global temperature by 2100 will range from __________. A. 1° F to 4° F B. 2° F to 10° F C. 5° F to 15° F D. 10° F to 20° F

The correct answer is (b) 2° F to 10° F

The prediction of scientist that the rise in global temperature is due to the rise in global warming. As a effect of global warming the glaciers are shrinking faster, plants and animal ranges has shifted, plants are flowering sooner. Many of the scientist predicted that if the amount of green house gas emission continues like this the rise in global temperature will increase up to a certain extent. The technology and industrialization is increasing day by day and then there are no chances that the effect of global warming can decrease it will keep on increasing and there will be a significant increase in temperature from 2° F to 10° F by 2100.


ANSWERED AT 21/02/2020 - 11:02 PM


QUESTION POSTED AT 21/02/2020 - 11:02 PM

7. In fruit flies, the gene for wing shape has an unusual allele called ‘curly’ (designated ‘Cy’). The normal (wild type) allele is designated ‘cy.’ A fly homozygous for cy (cy cy) has normal, straight wings. The heterozygote (Cy cy) has wings which curl up on the ends (and, incidentally, can’t really fly). The homozygote for the Cy allele (Cy Cy) never hatches out of the egg. In other words, this allele is lethal in the homozygous condition. If two curly winged flies are mated, and the female lays 100 eggs, predict the following, showingappropriate work:a. How many eggs will produce living offspring?b. How many straight winged flies do you expect among the living offspring?c. What percentage of the living offspring do you expect to be curly winged like the parents?

A) The answer is 75
b) The answer is 25.
c) The answer is 66%

The genotype of a curly winged fly is Cycy. So the cross between two curly winged flies would look like:
Parents:          Cycy         x         Cycy
Offspring:    CyCy      Cycy   Cycy       cycy

So, 1 of 4 (25%) will be dominant homozygotes (CyCy) which is lethal, 2 of 4 (50%) will be with curly wings (Cycy), and 1 of 4 (25%) will be recessive homozygotes (cycy) with normal wings. 

a) How many eggs will produce living offspring?
Of total 4 combinations, only one of them is lethal (CyCy), thus, 3 of 4 combinations (2 Cycy and 1 cycy) will hatch out. Therefore, 75% of the eggs will survive. If there are 100 eggs, 75% is 75 eggs:
100 eggs : 100% = x : 75%
x = 100 eggs * 75% : 100%
x = 75 eggs

b) 
How many straight winged flies do you expect among the living offspring?
Of the total 100 eggs, 75 eggs will survive. According to the crossing square, 3 combinations will survive - 
2 Cycy and 1 cycy. Among those living offspring 1 is with straight wings. So, it is 1 of 3 or ≈ 33%. Since we have 75 eggs as 100% of living offspring, 33% is 25:
75 eggs : 100% = x : 33%
x = 75 eggs * 33% : 100%
 25 eggs

c) 
What percentage of the living offspring do you expect to be curly winged like the parents?
We have already calculated that 75 eggs will survive. Among the living offspring (3 combinations), 2 of them are with curly wings. So, the percentage is 2 of 3 or 2/3 or 66%

ANSWERED AT 21/02/2020 - 06:37 PM


QUESTION POSTED AT 21/02/2020 - 06:37 PM

In photosynthesis, chlorophyll functions in changing A) glucose molecules to starch B) water and carbon dioxide to sugar C) light energy to chemical D) hydrogen bonds to water

C) light energy to chemical

The chlorophyll traps the light, then converts it and uses it to chemical energy.

The chemical energy is used in the grana and lamella of the chloroplasts to change water and carbon dioxide into glucose and oxygen.

ANSWERED AT 21/02/2020 - 10:31 AM


QUESTION POSTED AT 21/02/2020 - 10:31 AM

What is the main function of lysosomes

Lysosomes are mainly responsible for extracellular digestion

ANSWERED AT 20/02/2020 - 09:54 PM


QUESTION POSTED AT 20/02/2020 - 09:54 PM

A single unit of heredity that contains the information for an individual protein is referred to as a

I dont even know the answer need points to ask my question


ANSWERED AT 20/02/2020 - 09:54 PM


QUESTION POSTED AT 20/02/2020 - 09:54 PM